Structural and Magnetic Dynamics of a Laser Induced Phase Transition in FeRh

TY - JOUR

T1 - Structural and Magnetic Dynamics of a Laser Induced Phase Transition in FeRh

AU - Mariager, Simon Oddsson

AU - Pressacco, F.

AU - Ingold, G.

AU - Caviezel, A.

AU - Möhr-Vorobeva, E.

AU - Beaud, P.

AU - Johnson, S.L.

AU - Milne, C.J.

AU - Mancini, E.

AU - Moyerman, S.

AU - Feidenhans'l, Robert Krarup

PY - 2012/2/21

Y1 - 2012/2/21

N2 - We use time-resolved x-ray diffraction and magneto-optical Kerr effect to study the laser-induced antiferromagnetic to ferromagnetic phase transition in FeRh. The structural response is given by the nucleation of independent ferromagnetic domains (τ 1∼30ps). This is significantly faster than the magnetic response (τ 2∼60ps) given by the subsequent domain realignment. X-ray diffraction shows that the two phases coexist on short time scales and that the phase transition is limited by the speed of sound. A nucleation model describing both the structural and magnetic dynamics is presented.

AB - We use time-resolved x-ray diffraction and magneto-optical Kerr effect to study the laser-induced antiferromagnetic to ferromagnetic phase transition in FeRh. The structural response is given by the nucleation of independent ferromagnetic domains (τ 1∼30ps). This is significantly faster than the magnetic response (τ 2∼60ps) given by the subsequent domain realignment. X-ray diffraction shows that the two phases coexist on short time scales and that the phase transition is limited by the speed of sound. A nucleation model describing both the structural and magnetic dynamics is presented.

U2 - 10.1103/PhysRevLett.108.087201

DO - 10.1103/PhysRevLett.108.087201

M3 - Journal article

C2 - 22463562

SN - 0031-9007

VL - 108

SP - 087201

JO - Physical Review Letters

JF - Physical Review Letters

IS - 8

ER -